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TitleImpacts of landsliding in the western Cypress Hills, Saskatchewan and Alberta
DownloadDownload (whole publication)
AuthorSauchyn, D J; Lemmen, D S
SourceInterior Plains and Arctic Canada/Plaines intérieures et région arctique du Canada; by Geological Survey of Canada; Geological Survey of Canada, Current Research no. 1996-B, 1996 p. 7-14, https://doi.org/10.4095/207425 (Open Access)
Year1996
Alt SeriesPalliser Triangle Global Change Contribution 25
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediapaper; on-line; digital
RelatedThis publication is contained in Geological Survey of Canada; (1996). Interior Plains and Arctic Canada, Geological Survey of Canada, Current Research no. 1996-B
File formatpdf
ProvinceSaskatchewan; Alberta
NTS72E/12; 82H/09
AreaCypress Hills; Police Point; Battle Creek
Lat/Long WENS-110.1667 -109.7500 49.7500 49.5000
Subjectssurficial geology/geomorphology; hydrogeology; geochronology; sedimentology; landslides; erosion; water quality; suspended sediments; Holocene; groundwater levels; radiocarbon dates; hydrologic environment; radiometric dates; Quaternary
Illustrationssketch maps; analyses; photographs; cross-sections
Released1996 02 01
AbstractLandsliding on the Canadian prairies often produces downstream impacts on water quality, reservoir capacity, and fish habitat that represent more significant hazards than the destruction caused by the slide itself. Erosion measurements of Police Point landslide in the western Cypress Hills, which occurred in 1967 and remains highly unstable, document the importance of groundwater in controlling landslide activity and the futility of conventional remedial activities in limiting downstream impacts. Runoff from the landslide inputs large volumes of sediment to adjacent Battle Creek, with suspended sediment concentrations (up to 438 mg.L-1)downstream of the landslide being two to three orders of magnitude greater than occur upstream.
Chronological data are available for only a few sites, all indicting landslide activity in the Late Holocene. Higher regional groundwater tables associated with wetter and cooler climates at this time may have provided antecedent conditions promoting reactivation of slopes in response to extreme hydroclimatic events.
GEOSCAN ID207425